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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by BL02EPF0001A0FC.mail.protection.outlook.com (10.167.242.103) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6838.22 via Frontend Transport; Fri, 13 Oct 2023 11:22:51 +0000 Received: from [192.168.137.2] (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Fri, 13 Oct 2023 06:22:49 -0500 Message-ID: <91d61e1a-abb0-4b31-aa22-aff72d582ebe@amd.com> Date: Fri, 13 Oct 2023 13:22:44 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/5] dt-bindings: nvmem: Convert xlnx,zynqmp-nvmem.txt to yaml Content-Language: en-US To: Krzysztof Kozlowski , "Praveen Teja Kundanala" , , , , , , CC: References: <20231013101450.573-1-praveen.teja.kundanala@amd.com> <20231013101450.573-3-praveen.teja.kundanala@amd.com> <02d3fa42-75a3-4f4f-ade6-204c8146d694@linaro.org> From: Michal Simek Autocrypt: addr=michal.simek@amd.com; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Oct 2023 11:22:51.1947 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 06515ee3-0f6d-4503-143f-08dbcbdebcb8 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0001A0FC.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR12MB7184 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/13/23 12:30, Krzysztof Kozlowski wrote: > On 13/10/2023 12:14, Praveen Teja Kundanala wrote: >> Convert the xlnx,zynqmp-nvmem.txt to yaml. >> >> Signed-off-by: Praveen Teja Kundanala >> --- >> .../bindings/nvmem/xlnx,zynqmp-nvmem.txt | 46 --------------- >> .../bindings/nvmem/xlnx,zynqmp-nvmem.yaml | 59 +++++++++++++++++++ >> 2 files changed, 59 insertions(+), 46 deletions(-) >> delete mode 100644 Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt >> create mode 100644 Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.yaml >> >> diff --git a/Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt b/Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt >> deleted file mode 100644 >> index 4881561b3a02..000000000000 >> --- a/Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.txt >> +++ /dev/null >> @@ -1,46 +0,0 @@ >> --------------------------------------------------------------------------- >> -= Zynq UltraScale+ MPSoC nvmem firmware driver binding = >> --------------------------------------------------------------------------- >> -The nvmem_firmware node provides access to the hardware related data >> -like soc revision, IDCODE... etc, By using the firmware interface. >> - >> -Required properties: >> -- compatible: should be "xlnx,zynqmp-nvmem-fw" >> - >> -= Data cells = >> -Are child nodes of silicon id, bindings of which as described in >> -bindings/nvmem/nvmem.txt >> - >> -------- >> - Example >> -------- >> -firmware { >> - zynqmp_firmware: zynqmp-firmware { >> - compatible = "xlnx,zynqmp-firmware"; >> - method = "smc"; >> - >> - nvmem_firmware { >> - compatible = "xlnx,zynqmp-nvmem-fw"; >> - #address-cells = <1>; >> - #size-cells = <1>; >> - >> - /* Data cells */ >> - soc_revision: soc_revision { >> - reg = <0x0 0x4>; >> - }; >> - }; >> - }; >> -}; >> - >> -= Data consumers = >> -Are device nodes which consume nvmem data cells. >> - >> -For example: >> - pcap { >> - ... >> - >> - nvmem-cells = <&soc_revision>; >> - nvmem-cell-names = "soc_revision"; >> - >> - ... >> - }; >> diff --git a/Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.yaml b/Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.yaml >> new file mode 100644 >> index 000000000000..e03ed8c32537 >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/nvmem/xlnx,zynqmp-nvmem.yaml >> @@ -0,0 +1,59 @@ >> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) >> +%YAML 1.2 >> +--- >> +$id: http://devicetree.org/schemas/nvmem/xlnx,zynqmp-nvmem.yaml# >> +$schema: http://devicetree.org/meta-schemas/core.yaml# >> + >> +title: Zynq UltraScale+ MPSoC Non Volatile Memory interface >> + >> +description: | >> + The ZynqMP MPSoC provides access to the hardware related data >> + like SOC revision, IDCODE. >> + >> +maintainers: >> + - Kalyani Akula >> + - Praveen Teja Kundanala >> + >> +allOf: >> + - $ref: "nvmem.yaml#" > > Drop quotes. > >> + >> +properties: >> + compatible: >> + const: xlnx,zynqmp-nvmem-fw >> + >> + '#address-cells': >> + const: 1 > > Drop > >> + >> + '#size-cells': >> + const: 1 > > Drop > >> + >> +required: >> + - compatible > > required: block goes after patternProperties: block > >> + >> +patternProperties: >> + "^soc_revision@0$": > > Why do you define individual memory cells? Is this part of a binding? > IOW, OS/Linux requires this? nvmem has in kernel interface where you can reference to nodes. nvmem_cell_get() calls. It means you should be able to describe internal layout that's why names are used. And address in name is there because of reg property is used to describe base offset and size. Thanks, Michal